Why do we faint?

from  Discovery

Sep 13, 2016

Swooning maidens and clever horses feature in today's Curious Cases, sent in by listeners to curiouscases@bbc.co.uk. The Squeamish Swoon Science sleuths Hannah Fry and Adam Rutherford investigate the following question sent in by Philip Le Riche: 'Why do some people faint at the sight of blood, or a hypodermic needle, or even if they bash their funny bone? Does it serve any useful evolutionary purpose, or is just some kind of cerebral error condition?' Adam is strapped onto a hospital tilt ta...more

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